Question

Efetue as operações indicadas:

Answer 1

Explicação passo-a-passo:

a)

(+4/3) - (+7/4)

(4/3) - (7/4)

((4*4)/(3*4)) - ((7*3)/(4*3))

(16/12) - (21/12)

(16 - 21)/12

-5/12

b)

(+1/2) + (-2/3)

(1/2) - (2/3)

((1*3)/(2*3)) - ((2*2)/(3*2))

(3/6) - (4/6)

(3-4)/6

-1/6

c)

(+11/9)-(-7/6)

(11/9) + (7/6)

((11*6)/(9*6)) + ((7*9)/(6*9))

(66/54) + (63/54)

(129)/54

43/38

d) (

(-1/3) - (+2/5)

(-1/3) - (2/5)

-((1*5)/(3*5)) - ((2*3)/(5*3))

-(5/15) - (6/15)

-((5+6)/15)

-11/15